NSF, a short term for the National Sanitation Foundation which is found in 1944, is an independent third-party certification body that tests, certifies, and audits products to verify whether they meet public health and safety standards. The American certification organization changed its name to NSF International in 1990.    Products that meet NSF certification will be allowed to display the applicable NSF certification mark, showing that they have been tested by one of today’s most respected independent product testing organizations. And these products can be described as “NSF certified” or “NSF listed” products.     NSF Standards    The foundation of NSF standards is set up by not only the NSF International but also The American National Standards Institute, a private non-profit...